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Anonymous

If you cleaned out the condensor unit, your problem is probably a bad evaporator. Schedule a service call. If the condensor was really dirty then you may have just compacted the dust into the condensor in which case a shot of CO2 would be a good idea.

Check your owner's manual for a guide to the code. If not available, you may want to contact an appliance service company. It sounds like there is an issue with the "electronic control board" itself, but confirm this with a service company if unavailable in your manual.

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EC 21 has nothing to do with the refigerator. From the 600-2 series service manual page 3-21 EC 21 is
Defrost Overheat fault.The defrost system is only in the freezer and on a completely seperate refrigeration system. Clear the EC by holding the bell key pad down until you here a tone this is going to be a minimum of 15 but can be as long as 30 depending on the generation of your appliance. The part that you will most likely need to replace is the defrost terminator which stops the defrost cycle. You may have also had a problem in the refrigeration section which did fix by yourself, good job.